{"id":183943,"date":"2026-10-22T05:40:56","date_gmt":"2026-10-22T03:40:56","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/raskryty-detali-kriticheskih-uyazvimostej-v-php-i-opublikovany-korrektiruyushhie-obnovleniya"},"modified":"2026-10-22T05:41:02","modified_gmt":"2026-10-22T03:41:02","slug":"details-of-critical-php-vulnerabilities-disclosed-and-security-updates-released","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/details-of-critical-php-vulnerabilities-disclosed-and-security-updates-released","title":{"rendered":"Otkrivene su informacije o kriti\u010dnim ranjivostima u PHP-u i objavljene ispravke.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Objavljene su ispravke za PHP 8.5.12, 8.4.27, 8.3.36 i 8.2.35, kao i zakrpe za ve\u0107 nepodr\u017eane verzije PHP 7.4, PHP 8.0 i PHP 8.1 (ranjive verzije od 5.4 do 7.3 ostaju bez zakrpa), u kojima su ispravljene dvije kriti\u010dne ranjivosti:<\/p>\n<ul>\n<li class=\"l\"> CVE-2026-109618 \u2014 daljinsko izvr\u0161avanje koda uzrokovano time \u0161to, kada se iskori\u0161tava dostupna slobodna memorija za proces, obrada nedostatka memorije putem izvr\u0161avanja funkcije longjmp() mo\u017ee prekinuti PHP interpreter u stanju kada su samo delimi\u010dno inicijalizirane unutarnje strukture povezane s obradom zahteva. U nastavku, funkcija zavr\u0161etka obrade zahteva obra\u0107a se tim strukturama kao da su ve\u0107 inicijalizirane, premda memorija za njih nije dodeljena.\n<p>Glavni vektor napada je manipulacija multipart zahtjevima kako bi se stvorili uvjeti za ispunjenje dostupne memorije za proces. Da bi se izbjegla granica post_max_size, mo\u017ee se izostaviti Content-Length zaglavlje i poslati ogromna koli\u010dina HTTP zaglavlja. Mogu\u0107e su i to\u010dkovne napade na specifi\u010dne operacije u php aplikacijama koje pretjerano tro\u0161e memoriju. Potvr\u0111eno je postojanje exploit-a za mod_php, budu\u0107i da poziva funkciju shutdown() \u010dak i u slu\u010daju gre\u0161ke. PHP-FPM u slu\u010daju gre\u0161ke zavr\u0161ava dijete proces, \u0161to ote\u017eava izvo\u0111enje napada, ali ga teoretski ne isklju\u010duje. <\/p>\n<li class=\"l\"> CVE-2026-109619 \u2014 daljinsko izvr\u0161avanje koda uzrokovano pristupom memoriji nakon \u0161to je oslobo\u0111ena zbog nekorektnog \u010di\u0161\u0107enja globalnog stanja vezanog uz odre\u0111eni zahtev. U slu\u010daju prekida zahteva usled fatalne greske, isteka vremena ili nedostatka memorije, globalno stanje mo\u017ee ostati neresetovano i pokaziva\u010di \u0107e ostati aktivni, uprkos osloba\u0111anju memorije na koju se odnose. Kod obrade slede\u0107eg zahteva u istom procesu mo\u017ee do\u0107i do pristupa starom globalnom stanju putem preostalog pokaziva\u010da.\n<p>Za rad mo\u017ee biti kori\u0161tena stvaranje uvjeta za iscrpljenje dostupne memorije prilikom obrade multipart zahtjeva u kodu za indikaciju napretka u\u010ditavanja (session.upload_progress). U tom slu\u010daju kao glavni i potvr\u0111eni vektor napada spominje se obrada fatal_error_backtraces u PHP 8.5, koja ne resetira stanje pra\u0107enja pri zavr\u0161etku. U prvom slu\u010daju napad je mogu\u0107 na mod_php i PHP-FPM, a u drugom samo na mod_php. Tako\u0111er se spominje nepotvr\u0111ena mogu\u0107nost provo\u0111enja napada u konfiguracijama u kojima su u postavkama prisutne direktive koje dovode do ispisivanja upozorenja u ranom stadiju obrade zahtjeva (na primjer, upozorenja o kori\u0161tenju zastarjelih parametara).<\/p>\n<\/ul>\n<p>Izjavljuje se da je potpuno blokiranje ranjivosti mogu\u0107e samo kroz instalaciju a\u017euriranja. Sljede\u0107e mjere omogu\u0107uju smanjenje vjerojatnosti uspje\u0161nog provo\u0111enja napada, ali ne \u010dine sustav potpuno sigurnim:<\/p>\n<ul>\n<li class=\"l\"> Postavljanje parametra php.ini 'memory_limit=-1', \u0161to ote\u017eava mogu\u0107nost napada\u010du da kontroli\u0161e iskori\u0161tavanje limita memorije.\n<li class=\"l\"> Postavljanje parametra 'post_max_size = 8M' ako nije potrebna usluga u\u010ditavanja velikih fajlova. Vrednost parametra 'upload_max_filesize' treba biti manja od parametra 'post_max_size'.\n<li class=\"l\"> Postavljanje limita na dopu\u0161tenu potro\u0161nju memorije na sustavnom nivou, putem cgroup memory.max ili parametara potro\u0161nje memorije kontejnerom, ali ne kroz sustavne limite RLIMIT_AS i RLIMIT_DATA, koji samo provociraju problemati\u010dan poziv longjmp().\n<li class=\"l\"> Ako performanse nisu va\u017ene, mo\u017ee se ograni\u010diti broj zahtjeva koje obra\u0111uje jedan radni proces putem pm.max_requests=1 u PHP-FPM i MaxRequestsPerChild u Apache httpd.\n<li class=\"l\"> Postavljanje na razini php.ini ili konfiguracije <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hr\/server\/dts-los-angeles\/\"   title=\"poslu\u017eitelja\" data-wpil-keyword-link=\"linked\">poslu\u017eitelja<\/a> (ne putem ini_set() ili FPM .user.ini, jer parametar treba delovati pre po\u010detka obrade zahteva) parametra 'session.upload_progress.enabled=0'.\n<li class=\"l\"> Kada se koristi verzija PHP 8.5, treba postaviti parametar 'fatal_error_backtraces=0'.\n<li class=\"l\"> Uklanjanje povezanih s pojedinim zahtjevima zastarjelih ili pogre\u0161nih postavki (tipa assert.* i neto\u010dnih putanja u open_basedir), \u0161to dovodi do ispisivanja dijagnosti\u010dkih poruka prije inicijalizacije.\n<li class=\"l\"> Otklanjanje u PHP kodu situacija koje dovode do postizanja vremenskih ograni\u010denja i fatalnih gre\u0161aka, na primjer, vezanih uz kvarove u callback obradi i obradi u\u010ditavanja.\n<li class=\"l\"> Da biste blokirali prvu ranjivost u kodu starih verzija PHP-a, mo\u017eete zamijeniti poziv longjmp() u handleru za iscrpljivanje slobodne memorije s _exit().\n<li class=\"l\"> Dodatno, mo\u017eete smanjiti vrijednost parametra max_input_nesting_level u php.ini i blokirati multipart upite, kao \u0161to je prikazano u prethodnom najavi.\n<\/ul>\n<p>Status uklanjanja ranjivosti u distribucijama mo\u017eete ocijeniti na ovim stranicama: Debian, Ubuntu, SUSE, RHEL, Gentoo, Arch,<br \/>\nFedora, FreeBSD.<\/p>\n<p>Dopuna 1: Ranljivosti su otkrivene pomo\u0107u AI modela GPT-5.6 i Gemini 4 Argon. Kompanija OpenAI je objavila alat php2shell-checker za proveru podlo\u017enosti ranjivostima web stranica i lokalnih izvr\u0161nih datoteka, ali ovaj alat samo proverava broj verzije PHP-a koji vra\u0107a HTTP server ili komanda 'php -v', bez detaljne analize.<\/p>\n<p>Dodatak 2: Autor prototipa eksploitnog alata koji koristi ranjivost uzrokovanu dvostrukim osloba\u0111anjem memorije (double-free) izvijestio je da problem ostaje neispravljen u izdanju PHP 8.5.12 i eksploit i dalje funkcionira. Ranije su predstavnici PHP-a izjavili da ova ranjivost nije povezana s pripremljenim ispravcima i nije stvarni problem. Autor eksploitnog alata tvrdio je da je rije\u010d o sasvim druga\u010dijoj ranjivosti.<br \/>\n<br \/>Izvor: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=66520\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 PHP 8.5.12, 8.4.27, 8.3.36 \u0438 8.2.35, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043f\u0430\u0442\u0447\u0438 \u0434\u043b\u044f \u0443\u0436\u0435 \u043d\u0435 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0432\u0435\u0442\u043e\u043a PHP 7.4, PHP 8.0 \u0438 PHP 8.1 (\u0443\u044f\u0437\u0432\u0438\u043c\u044b\u0435 \u0432\u0435\u0440\u0441\u0438\u0438 \u0441 5.4 \u043f\u043e 7.3 \u043e\u0441\u0442\u0430\u044e\u0442\u0441\u044f \u0431\u0435\u0437 \u043f\u0430\u0442\u0447\u0435\u0439), \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u044b \u0434\u0432\u0435 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438: CVE-2026-109618 &#8212; \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043a\u043e\u0434\u0430, \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u043e\u0435 \u0442\u0435\u043c, \u0447\u0442\u043e \u043f\u0440\u0438 \u0438\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0443 \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a \u043d\u0435\u0445\u0432\u0430\u0442\u043a\u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-183943","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.5 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 PHP 8.5.12, 8.4.27, 8.3.36 \u0438 8.2.35, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043f\u0430\u0442\u0447\u0438 \u0434\u043b\u044f \u0443\u0436\u0435 \u043d\u0435 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